Scripting for Multimedia LECTURE 17: PLAYING AUDIO Audio formats - - PowerPoint PPT Presentation

Scripting for Multimedia

LECTURE 17: PLAYING AUDIO

Audio formats

• The most common formats
• Ogg/Vorbis (.oga, .ogg extension)
• MP3 (.mp3 extension)
• MP4 (.mp4, .mp4a, .aac extension)
• WAV (.wav extension)

The <audio> elements

• It is used to play audio

<audio controls="controls"> <source src="song.mp3" /> You need a browser that supports HTML5! </audio>

Setting the source

• The <source> element specifies an audio source
• At a minimum, you need to set the src attribute to the URL of the video
• There can be more than one <source> element

<audio id="audio" controls="controls"> <source src="media/kittycat.oga" type='audio/ogg; codecs="vorbis"' /> <source src="media/kittycat.wav" type='audio/wav; codecs="1"' /> <source src="media/kittycat.mp3" type='audio/mpeg; codecs="mp3"' /> </audio>

• The recommended order
• .oga
• .wav
• .mp3

Configuring the <video> element

• Attributes for <audio> element
• autoplay
• controls
• loop
• preload
• src

Quick check

You want to repeat the audio continuously when it completes. Which attribute must you set?